[flashrom] [Patch] add support for SiS963

[David Borg]

Patch to enable sis963 southbridge and W83697HF/F SuperIO. DO NOT
APPLY IT, as it needs to be finalised, (tomorrow probably). Please
comment on what else needs to be done (which variables need to be
initialised for example). Yes, it's a bit too verbose, but I'm still
learning hehe. Probe works and detects the flash chip.

Regards,
David